Counterweight hoisting structure and engineering machine

Abstract

The application relates to the technical field of engineering machinery, and discloses a counterweight hoisting structure and engineering machinery, which comprises a counterweight, a rotating table, a rotating arm and a lifting mechanism. The rotating table is provided with a first marker and a second marker. The rotating arm is rotatably connected with the rotating table, and the rotating arm is provided with a third marker. The lifting mechanism is connected with the rotating arm. When the rotating arm rotates to a first position, the lifting mechanism is in a separated state with the counterweight, and the third marker is aligned with the first marker. When the lifting mechanism rotates to a second position, the lifting mechanism is in a matched state with the counterweight, and the third marker is aligned with the second marker. The counterweight hoisting structure can help the operator to judge the position of the rotating arm and the state between the lifting mechanism and the counterweight by observing the third marker in the cab, so that the counterweight can be accurately hoisted. The operator does not need to repeatedly enter and exit the cab to observe and determine the position of the lifting mechanism, the operation is simpler, and the work efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of engineering machinery technology, specifically to a counterweight hoisting structure and engineering machinery. Background Technology

[0002] For construction machinery, especially cranes, counterweights are often required to support heavy loads. These counterweights need to be installed at the counterweight mounting point during operation and at the counterweight placement point during non-operational times to facilitate movement of the machinery. To save manpower during counterweight installation, existing construction machinery often uses counterweight assembly devices to install the counterweight at the mounting point. These devices include a turntable, a boom, and a lifting mechanism. The turntable is mounted on the upper platform. The boom is connected to the turntable, and the lifting mechanism is connected to the boom. The lifting mechanism includes a lifting cylinder and a lifting hook.

[0003] By rotating the turntable, the lifting mechanism is moved above the counterweight placement area via the rotating arm. Then, the lifting hook is lowered to the first position using the lifting cylinder, at which point the lifting hook separates from the counterweight. Next, the turntable is rotated again, moving the lifting mechanism to the second position via the rotating arm. At this point, the lifting hook engages with the counterweight, and the lifting hook is lifted using the lifting cylinder, thus hoisting the counterweight. Finally, the turntable is rotated again, moving the lifting mechanism above the counterweight installation area via the rotating arm, and the lifting hook is lowered using the lifting cylinder, placing the counterweight at the installation location.

[0004] During the process of hoisting the counterweight from its placement point, the operator needs to repeatedly enter and exit the cab to observe and confirm the position of the lifting mechanism. This is to ensure that the lifting mechanism is accurately positioned in the first and second positions, resulting in low work efficiency.

[0005] Therefore, how to solve or improve the problem of low work efficiency in the hoisting and assembling of counterweights during the installation of existing engineering machinery has become an important technical problem to be solved by those skilled in the art. Utility Model Content

[0006] This application provides a counterweight hoisting structure and engineering machinery to solve or improve the problem of low work efficiency in the hoisting and assembling process of existing engineering machinery when installing counterweights in related technologies.

[0007] Firstly, this application provides a counterweight hoisting structure, including: Counterweight; The turntable is equipped with a first marker and a second marker. A rotating arm has a first end and a second end. The first end of the rotating arm is rotatably connected to the turntable. The rotating arm can rotate between a first position and a second position. A third marker is provided on the rotating arm for observation by the operator in the cab. A lifting mechanism is connected to the second end of the rotating arm and is capable of rotating between a first position and a second position, wherein... When the rotating arm is rotated to the first position, the lifting mechanism and the counterweight are separated, and the third marker is aligned with the first marker; When the lifting mechanism is rotated to the second position, the lifting mechanism and the counterweight are in a cooperative state, and the third marker is aligned with the second marker.

[0008] In one alternative embodiment, the third marker is provided with a tip, and when the rotating arm is rotated to the first position, the tip is aligned with the first marker. When the lifting mechanism is rotated to the second position, the tip is aligned with the second marker.

[0009] In one alternative implementation, it further includes: The connector has a waist-shaped hole on the third marker and a plug-in hole on the rotating arm. The connector passes through the waist-shaped hole and is inserted into the plug-in hole.

[0010] In one optional embodiment, at least two connectors are provided, and the number of connector holes is the same as the number of connectors. Each connector passes through the waist-shaped hole and is inserted into the connector hole in a corresponding manner.

[0011] In one optional embodiment, the turntable is provided with a first mounting hole and a second mounting hole, the first marker is installed in the first mounting hole, and the second marker is installed in the second mounting hole.

[0012] In one alternative implementation, the first and second markers are pins.

[0013] In one optional embodiment, the counterweight is provided with a lifting part, the lifting mechanism is provided with a lifting part, and the lifting part is capable of lifting and lowering. When the lifting mechanism and the counterweight are in a separated state, the lifting part and the lifting part are offset in the vertical direction; when the lifting mechanism and the counterweight are in a coordinated state, the lifting part and the lifting part at least partially overlap in the vertical direction.

[0014] In one optional embodiment, the lifting mechanism is configured as a piston cylinder, the cylinder body of which is connected to the second end of the rotating arm, and the hoisting part is disposed on the piston rod of the piston cylinder.

[0015] In one optional embodiment, the counterweight is provided with a first lifting slot, a through slot, and a second lifting slot. The tops of the first lifting slot, the through slot, and the second lifting slot are all open. The part to be lifted is located at the top of the second lifting slot. The lifting part can extend into the first lifting slot and pass through the through slot into the second lifting slot. When the lifting part is located in the second lifting slot, the lifting part can be vertically positioned and engaged with the part to be lifted.

[0016] Secondly, this application also provides an engineering machinery, including any of the counterweight hoisting structures described above.

[0017] This application provides a counterweight lifting structure, including a counterweight, a turntable, a boom, and a lifting mechanism. A first marker and a second marker are provided on the turntable. The first end of the boom is rotatably connected to the turntable and can rotate between a first position and a second position. A third marker is provided on the boom for observation by the operator in the cab. The lifting mechanism is connected to the second end of the boom. When the boom is rotated to the first position, the lifting mechanism is separated from the counterweight, and the third marker is aligned with the first marker. When the lifting mechanism is rotated to the second position, the lifting mechanism is engaged with the counterweight, and the third marker is aligned with the second marker. During counterweight lifting, the operator operates and observes the third marker from the cab. When the third marker aligns with the first marker, it is determined that the boom has rotated to the first position, thus indicating that the lifting mechanism and counterweight are separated. The operator then operates the boom from the cab and observes the third marker. When the third marker aligns with the second marker, it is determined that the boom has rotated to the second position, thus indicating that the lifting mechanism and counterweight are engaged. At this point, stop rotating the boom and use the lifting mechanism to hoist and lift the counterweight.

[0018] With this setup, the operator can determine the position of the boom and the relationship between the lifting mechanism and the counterweight by observing a third marker from inside the cab, thus accurately lifting the counterweight. There's no need to repeatedly enter and exit the cab to observe and confirm the position of the lifting mechanism, making operation simpler and improving work efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this application, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1This is a schematic diagram of a counterweight hoisting structure according to an embodiment of this application when the boom is in the first position; Figure 2 for Figure 1 A magnified view of part A in the diagram; Figure 3 for Figure 1 A magnified view of part B in the diagram; Figure 4 This is a schematic diagram of a counterweight hoisting structure according to an embodiment of this application when the boom is in the second position; Figure 5 for Figure 4 A magnified view of part of C; Figure 6 for Figure 4 A magnified view of part of D; Figure 7 This is a schematic diagram of the third marker structure of a counterweight hoisting structure according to an embodiment of this application; Figure 8 This is a schematic diagram of the counterweight structure of a counterweight hoisting structure according to an embodiment of this application.

[0021] Explanation of reference numerals in the attached figures: 1. Counterweight; 11. First lifting slot; 12. Through slot; 13. Second lifting slot; 131. Lifted part; 2. Turntable; 3. Swing arm; 4. Lifting mechanism; 41. Lifting part; 5. First marker; 6. Second marker; 7. Third marker; 71. Tip; 72. Waist-shaped hole; 8. Connector. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] The following is combined with Figures 1 to 8 This describes an embodiment of the present application.

[0024] According to an embodiment of this application, a counterweight hoisting structure is provided, including a counterweight 1, a turntable 2, a boom 3, and a lifting mechanism 4. The counterweight 1 is placed at a designated position on the platform.

[0025] A turntable 2 is mounted on a platform, and a first marker 5 and a second marker 6 are mounted on the turntable 2. A rotating arm 3 has a first end and a second end. The first end of the rotating arm 3 is rotatably connected to the turntable 2, and the rotating arm 3 can rotate between a first position and a second position. A third marker 7 is mounted on the rotating arm 3 for observation by the operator in the cab. A lifting mechanism 4 is connected to the second end of the rotating arm 3.

[0026] When the boom 3 is rotated to the first position, the lifting mechanism 4 and the counterweight 1 are separated, and the third marker 7 is aligned with the first marker 5; when the lifting mechanism 4 is rotated to the second position, the lifting mechanism 4 and the counterweight 1 are engaged, and the third marker 7 is aligned with the second marker 6.

[0027] When the lifting mechanism 4 and the counterweight 1 are separated, the lifting mechanism 4 cannot lift the counterweight 1; when the lifting mechanism 4 and the counterweight 1 are in a coordinated state, the lifting mechanism 4 can lift the counterweight 1.

[0028] When hoisting counterweight 1, the operator operates from the cab and observes the third marker 7. When the third marker 7 aligns with the first marker 5, the boom 3 is determined to have rotated to the first position, indicating that the lifting mechanism 4 and counterweight 1 are now separated. The operator then operates the boom 3 from the cab while observing the third marker 7. When the third marker 7 aligns with the second marker 6, the boom 3 is determined to have rotated to the second position, indicating that the lifting mechanism 4 and counterweight 1 are now engaged. At this point, the operator stops rotating the boom 3 and uses the lifting mechanism 4 to lift and raise counterweight 1.

[0029] With this setup, the operator can determine the position of the boom 3 and the relationship between the lifting mechanism 4 and the counterweight 1 by observing the third marker 7 from the cab, thus accurately lifting the counterweight 1. There is no need to repeatedly enter and exit the cab to observe and confirm the position of the lifting mechanism 4, making operation simpler and improving work efficiency.

[0030] In one embodiment, the third marker 7 is provided with a tip 71. When the rotating arm 3 rotates to the first position, the third marker 7 rotates together with the rotating arm 3, at which time the tip 71 on the third marker 7 is aligned with the first marker 5. It can be determined that the rotating arm 3 has rotated to the first position, thereby determining that the lifting mechanism 4 and the counterweight 1 are in a separated state.

[0031] When the rotating arm 3 rotates to the second position, the third marker 7 rotates together with the rotating arm 3. At this time, the tip 71 of the third marker 7 is aligned with the second marker 6. It can be determined that the rotating arm 3 has rotated to the second position, and thus it can be determined that the lifting mechanism 4 and the counterweight 1 are in a cooperative state.

[0032] This design makes the tip 71 easier for the operator to observe and judge.

[0033] In one embodiment, the counterweight hoisting structure further includes a connector 8. The third marker 7 is provided with an oblong hole 72, and the rotating arm 3 is provided with a connector hole. By passing the connector 8 through the oblong hole 72 and inserting it into the connector hole, the third marker 7 and the rotating arm 3 can be connected through the connector 8.

[0034] The connector 8 can slide along the oblong hole 72, thereby allowing the position of the third marker 7 to be adjusted arbitrarily as needed to compensate for manufacturing tolerances or installation errors.

[0035] Specifically, the connector 8 is a screw, and the connector hole corresponds to a threaded hole. The diameter of the screw nut is larger than the width of the oblong hole 72. When installing the third marker 7, the screw is inserted through the oblong hole 72 and screwed into the threaded hole. At this time, the screw can slide relative to the oblong hole 72, thereby adjusting the position of the third marker 7. After the third marker 7 is adjusted into place, the screw is tightened, so that the screw nut presses the third marker 7 against the rotating arm 3, thus connecting the third marker 7 to the rotating arm 3.

[0036] In one embodiment, at least two connectors 8 are provided, and the number of connector holes is the same as the number of connectors 8. Each connector 8 passes through the oblong hole 72 and is inserted into the corresponding connector hole.

[0037] At this time, at least two connectors 8 are positioned at at least two locations to fasten the third marker 7, making the connection between the third marker 7 and the rotating arm 3 more stable.

[0038] Specifically, the connector 8 is a screw, and the corresponding insertion hole is a threaded hole. The diameter of the screw nut is larger than the width of the oblong hole 72. When installing the third marker 7, each screw is inserted through the oblong hole 72 and screwed into the threaded hole. At this time, each screw can slide relative to the oblong hole 72, so that the third marker 7 can slide and adjust along the straight line connecting two adjacent screws. After the third marker 7 is adjusted into place, each screw is tightened, so that the nut of each screw presses the third marker 7 against the rotating arm 3, thereby connecting the third marker 7 to the rotating arm 3.

[0039] At this point, with the screws tightening, the connection between the third marker 7 and the rotating arm 3 becomes more secure.

[0040] The third marker 7 can be equipped with reflective elements or a brightly colored coating to make it easier for the operator to observe.

[0041] In one embodiment, the turntable 2 is provided with a first mounting hole and a second mounting hole. The first mounting hole is used to mount a first marker 5, and the second mounting hole is used to mount a second marker 6. The first and second mounting holes are opened according to actual needs to ensure that when the rotating arm 3 rotates to the first position, the third marker 7 is aligned with the first mounting hole, and when the rotating arm 3 rotates to the second position, the third marker 7 is aligned with the second mounting hole.

[0042] In this way, when setting the first marker 5 and the second marker 6, the first marker 5 can be directly installed in the first mounting hole and the second marker 6 can be installed in the second mounting hole. This makes it easier to install the third marker 7 when the rotating arm 3 is rotated to the first position and the third marker 7 is aligned with the second marker 6 when the rotating arm 3 is rotated to the second position.

[0043] In some embodiments, the first marker 5 is detachably connected to the first mounting hole, and the second marker 6 is detachably connected to the second mounting hole, facilitating replacement and maintenance.

[0044] In one embodiment, the first marker 5 and the second marker 6 are bolts, and the first mounting hole and the second mounting hole are threaded connection holes. During installation, the first marker 5 is screwed into the first mounting hole, and the second marker 6 is screwed into the second mounting hole, making installation more convenient.

[0045] In one embodiment, the counterweight 1 is provided with a lifting part 131, the lifting mechanism 4 is provided with a lifting part 41, and the lifting part 41 is capable of lifting and lowering. When the lifting mechanism 4 and the counterweight 1 are in a separated state, the lifting part 41 and the lifting part 131 are offset in the vertical direction. When the lifting mechanism 4 and the counterweight 1 are in a coordinated state, the lifting part 41 and the lifting part 131 at least partially overlap in the vertical direction.

[0046] Specifically, when hoisting counterweight 1, the operator rotates the boom 3 from the cab and observes the third marker 7. The boom 3 stops rotating when the third marker 7 aligns with the first marker 5. At this time, the boom 3 rotates to the first position, and the hoisting part 41 on the lifting mechanism 4 is located above the hoisted part 131 of the counterweight 1, and the hoisting part 41 and the hoisted part 131 are vertically offset.

[0047] The lifting mechanism 4 is then used to lower the hoisting part 41 below the hoisted part 131. The boom 3 is then rotated while observing the third marker 7. The boom 3 stops rotating when the third marker 7 aligns with the second marker 6. At this point, the boom 3 rotates to the second position, where the hoisting part 41 and the hoisted part 131 at least partially overlap in the vertical direction. When the lifting mechanism 4 is then used to raise the hoisting part 41, the hoisting part 41 and the hoisted part 131 abut against each other in the vertical direction, thereby lifting the counterweight 1.

[0048] In one embodiment, the lifting mechanism 4 is configured as a piston cylinder, the cylinder body of which is connected to the second end of the rotating arm 3, and the hoisting part 41 is mounted on the piston rod of the piston cylinder.

[0049] In this way, the piston rod extends and retracts relative to the piston rod, which can drive the lifting part 41 to rise and fall.

[0050] The hoisting part 41 can be configured as a hook or as a block that protrudes radially on the outer wall of the piston rod.

[0051] In one embodiment, the counterweight 1 is provided with a first lifting slot 11, a through slot 12, and a second lifting slot 13. The tops of the first lifting slot 11, the through slot 12, and the second lifting slot 13 are all open. The lifting part 131 is located at the top of the second lifting slot 13. The lifting part 41 can extend into the first lifting slot 11 and pass through the through slot 12 to enter the second lifting slot 13. When the lifting part 41 is located in the second lifting slot 13, the lifting part 41 can be vertically positioned and engaged with the lifting part 131.

[0052] Specifically, when hoisting load 1, the operator rotates the boom 3 from the cab and observes the third marker 7. The boom 3 stops rotating when the third marker 7 is aligned with the first marker 5. At this time, the boom 3 rotates to the first position, and the hoisting part 41 on the lifting mechanism 4 is located directly above the first hoisting slot 11. The hoisting part 41 and the hoisted part 131 are staggered in the vertical direction.

[0053] The lifting mechanism 4 is then used to lower the hoisting part 41 until it extends into the first hoisting slot 11. The boom 3 is then rotated while observing the third marker 7. The boom 3 stops rotating when the third marker 7 aligns with the second marker 6. At this point, the boom 3 rotates to the second position, and the hoisting part 41 passes through the through slot 12 and enters the second hoisting slot 13. The hoisting part 41 and the hoisted part 131 at least partially overlap in the vertical direction. When the lifting mechanism 4 is then used to raise the hoisting part 41, the hoisting part 41 and the hoisted part 131 abut against each other in the vertical direction, thereby lifting the counterweight 1.

[0054] The hoisting part 131 can be a retaining edge set at the top of the second hoisting slot 13.

[0055] According to an embodiment of this application, another aspect provides an engineering machine, including a platform and any of the above-mentioned counterweight hoisting structures. The turntable 2 is mounted on the platform, and the counterweight 1 is mounted on the platform. The technical effects of this engineering machine are the same as those of the counterweight hoisting structure, and therefore will not be described further.

[0056] Construction machinery can include cranes, etc.

[0057] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and such modifications and variations all fall within the scope defined by this application.

Claims

1. A counterweight hoisting structure, characterized in that, include: Counterweight (1); The turntable (2) is equipped with a first marker (5) and a second marker (6); The rotating arm (3) has a first end and a second end. The first end of the rotating arm (3) is rotatably connected to the turntable (2). The rotating arm (3) can rotate between a first position and a second position. A third marker (7) is provided on the rotating arm (3). The third marker (7) is for the operator in the cab to observe. The lifting mechanism (4) is connected to the second end of the rotating arm (3), wherein, When the rotating arm (3) is rotated to the first position, the lifting mechanism (4) is separated from the counterweight (1), and the third marker (7) is aligned with the first marker (5); When the lifting mechanism (4) is rotated to the second position, the lifting mechanism (4) and the counterweight (1) are in a cooperative state, and the third marker (7) is aligned with the second marker (6).

2. The counterweight hoisting structure according to claim 1, characterized in that, The third marker (7) is provided with a tip (71), and when the rotating arm (3) is rotated to the first position, the tip (71) is aligned with the first marker (5); When the lifting mechanism (4) is rotated to the second position, the tip (71) is aligned with the second marker (6).

3. The counterweight hoisting structure according to claim 1, characterized in that, Also includes: The connector (8) has a waist-shaped hole (72) on the third marker (7) and a plug hole on the rotating arm (3). The connector (8) passes through the waist-shaped hole (72) and is inserted into the plug hole.

4. The counterweight hoisting structure according to claim 3, characterized in that, At least two plug-in pieces (8) are provided, and the number of plug-in holes is the same as that of the plug-in pieces (8). Each plug-in piece (8) passes through the waist-shaped hole (72) and is inserted into the plug-in hole one by one.

5. The counterweight hoisting structure according to claim 1, characterized in that, The turntable (2) is provided with a first mounting hole and a second mounting hole. The first marker (5) is installed in the first mounting hole, and the second marker (6) is installed in the second mounting hole.

6. The counterweight hoisting structure according to claim 5, characterized in that, The first marker (5) and the second marker (6) are bolts.

7. The counterweight hoisting structure according to claim 1, characterized in that, The counterweight (1) is provided with a hoisting part (131), the lifting mechanism (4) is provided with a hoisting part (41), and the hoisting part (41) is capable of lifting and lowering. When the lifting mechanism (4) and the counterweight (1) are in a separated state, the hoisting part (41) and the hoisting part (131) are offset in the vertical direction. When the lifting mechanism (4) and the counterweight (1) are in a coordinated state, the hoisting part (41) and the hoisting part (131) at least partially overlap in the vertical direction.

8. The counterweight hoisting structure according to claim 7, characterized in that, The lifting mechanism (4) is configured as a piston cylinder, the cylinder body of the piston cylinder is connected to the second end of the rotating arm (3), and the hoisting part (41) is disposed on the piston rod of the piston cylinder.

9. The counterweight hoisting structure according to claim 7, characterized in that, The counterweight (1) is provided with a first lifting slot (11), a through slot (12) and a second lifting slot (13). The top of the first lifting slot (11), the through slot (12) and the second lifting slot (13) are all open. The part to be lifted (131) is located at the top of the second lifting slot (13). The lifting part (41) can extend into the first lifting slot (11) and pass through the through slot (12) to enter the second lifting slot (13). When the lifting part (41) is located in the second lifting slot (13), the lifting part (41) can be vertically positioned and cooperated with the part to be lifted (131).

10. An engineering machinery, characterized in that, Includes the counterweight hoisting structure as described in any one of claims 1-9.

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